Electric pump-motor



(No Model.)

J. F. BLAKE. ELECTRIC PUMP MOTOR.

Nox 520,722. Patented May 29, 1894.

ATTORNEYS.

UNITED STATES PATENT Ormes.

JOI'IN FEGGETTER BLAKE, OF NEV HAVEN, CONNECTICUT.

ELECTRIC PUMP-MOTOR.

:SPECIFICATION forming part of Letters Patent No. 520,722, dated May 29, 1894.

Application filed September 7, 1893,

To all whom, it may concern:

Beit known thatl, JOHN FEGGETTER BLAKE, a citizen of the United States, residing at New Haven, in the county. of New Haven and State of Connecticut, have invented new and useful Improvements in Electric Pump-Motors, of which the following is a specification.

This invention relates to an electric motor for pumping air into beer barrels and recep tacles for generating pressure whereby the contents of the receptacle can be raised to a higher level than that occupied by the receptacle and the invention consists in the novel features pointed out in the following specilication and claims and illustrated in the annexed drawings, in which- Figure lis a side elevation of the motor applied to a barrel, the motor being sectioned along Fig. 2. Fig. 2 is a section along y y Fig. 1. Fig. 3 is a section along z z Fig. 2. Fig. I is a detail view of a cylinder.

In the drawings the letter A indicates a cask or receptacle the beer or contents from which are forced up by the pressure in the cask through pipe B to be tapped off at the cock O as required. The air for generating the required pressure is forced through pipe D into the cask. The pipe D connects with pump cylinder E in any well known way, the plunger F in cylinder E being actuated by the pitman G connected to crank pin II on pulleyI driven by belt K and pulley L, which latter is actuated by an electric motor M of anyI suitable well known construction and having the requisite power for generating the required air pressure.

Connected to the pressure pipeD is a pressure chamber N and when the pressure in cask A sinks below the required degree the diaphragm O in pressure chamber N will drop or collapse so as to allow the stem P resting on diaphragm O to sink and the lever Q pivoted at Q', and resting on stern P, is drawn down by spring R connected'to Xed arm S by a nut T. By screwing the nutT one way o r another the spring R can be loosened or tightened so as to draw down the lever Q on a less or greater diminution of pressure in chamber N as required. The lever Q connects by link Uwith the lever VWfulcrumed at X and having a roller Y which when the lever arm V is depressed will ride from below serial ira/184,998. (No man.)

the shoulder a of spring Z a and come to rest in the hollow or bend Z of said spring. The lever arm V being depressed will depress the arm b of lever b c fulcru med at d so as to cause the roller c on said lever arm b to ride from above the shoulderf of springf g into the hollow or bend g of said spring. This motion of lever Z2 c will bring the Contact piece 7L on lever arm c into touch with the contacts t' connected to conductors 71: thereby closing the circuit and starting the motor M to pump air into cask A.

When thepressure in cask A has risen to the required degree the diaphragm O in chamber N will raise lever Qagainst the resistance of spring R so as to raise lever arm V and depress lever arm W, bringing roller Y below the bend a of spring Z a. The lever arm WV being depressed will depress lever arm c so as to break the contact between the piece h and contacts t', thereby stopping the motor. Vhen the lever arm c is depressed the lever arm b rises so as to carry roller e up above bend f of the springf g. The springs Z a and f g thus prevent accidental movement of the levers V W and b c. These springs Z a and f g also cause thelevers V W and b cto jump quickly from one position to another, thereby moving the contact piece h rapidly into and out of connection to avoid the formation of an arc. I have also found it of advantage to connect the link U'to lever V IV by aslotted connection l (Fig. 2') so that the spring Z @can throw or snap the lever V W to some extent independently of link U.

The air enters into pipe D through the well known alternating pump valves m m (Fig. l) one valve closing as the other opens as well known. I have found it of advantage also to place entrance holes fn, (Fig. 4) near one end of the pump cylinder E, the`piston F when near its back stroke passing slightly beyond these holes 'n and allowing air to enter said holes to thoroughly iill the cylinder E, so that on the forward or pumping stroke of piston or plunger F a full charge of air will be forced from cylinder E into pipe D.

The operation of the device it is noticed is automatic, the motor starting when the air pressure sinks below the required degree and stopping when the pressure is of sufficient intensity. I

IOO

purposes described.

2. The combination With a cask or receptacle and a pump for supplying air pressure to the cask of a pressure chamber7 a contact lever as b c, a transmission lever as V lV actuated by the pressure in the chamber and made to actuate the Contact lever, springs or detents for said levers, and an electric motor actuated through said Contact lever and made to actuate the pump substantially as described.

3. The combination with a cask or receptacle and a pump for supplying air pressure to the cask, of a pressure chamber, an actuating lever as Q, actuated by the pressure in the chamber, a regulating spring as R for the act: uating lever, a transmission lever connected to the actuating lever a contact lever actuated by the transmission lever, and an electric motor actuated through said contact lever and made to actuate the pump substantially as described.

In testimony-whereof I have hereunto set my hand in the presence of two subscribing Witnesses.

JHN FEGGETTER BLAKE.

Vitnesses:

THOMAS OBRIEN, JOHN F. WYNNE. 

